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1. Digital signature - Wikipedia

   en.wikipedia.org/wiki/Digital_signature

   Definition. A digital signature scheme typically consists of three algorithms: A key generation algorithm that selects a private key uniformly at random from a set of possible private keys. The algorithm outputs the private key and a corresponding public key. A signing algorithm that, given a message and a private key, produces a signature.

2. Pretty Good Privacy - Wikipedia

   en.wikipedia.org/wiki/Pretty_Good_Privacy

   The sender uses PGP to create a digital signature for the message with either the RSA or DSA algorithms. To do so, PGP computes a hash (also called a message digest) from the plaintext and then creates the digital signature from that hash using the sender's private key.

3. Digital Signature Algorithm - Wikipedia

   en.wikipedia.org/wiki/Digital_Signature_Algorithm

   The Digital Signature Algorithm (DSA) is a public-key cryptosystem and Federal Information Processing Standard for digital signatures, based on the mathematical concept of modular exponentiation and the discrete logarithm problem. In a public-key cryptosystem, two keys are generated: data can only be encrypted with the public key and encrypted ...

4. Code signing - Wikipedia

   en.wikipedia.org/wiki/Code_signing

   Code signing. Code signing is the process of digitally signing executables and scripts to confirm the software author and guarantee that the code has not been altered or corrupted since it was signed. The process employs the use of a cryptographic hash to validate authenticity and integrity. [1] Code signing was invented in 1995 by Michael ...

5. Add, edit, or disable your signature in AOL Mail

   help.aol.com/articles/add-edit-or-disable-your...

   This feature ensures all your AOL messages maintain a consistent, professional look with minimal effort. 1. Click the Settings Menu icon | select More Settings. 2. Click Writing email. 3. Click the Toggle button to enable or disable a signature for your email address. 4. Enter or edit your signature in the text box.

6. ElGamal signature scheme - Wikipedia

   en.wikipedia.org/wiki/ElGamal_signature_scheme

   Overview. The ElGamal signature scheme is a digital signature scheme based on the algebraic properties of modular exponentiation, together with the discrete logarithm problem. The algorithm uses a key pair consisting of a public key and a private key. The private key is used to generate a digital signature for a message, and such a signature ...